/Engine/Source/Runtime/Engine/Classes/Animation/AnimCompositeBase.h
Given a Track delta position [StartTrackPosition, EndTrackPosition] See if this AnimSegment overlaps any of it, and if it does, break them up into a sequence ofFRootMotionExtractionStep. Supports animation playing forward and backward. Track range should be a contiguous range, not wrapping over due to looping.
void GetRootMotionExtractionStepsForTrackRange ( [TArray](API\Runtime\Core\Containers\TArray)< [FRootMotionExtractionStep](API\Runtime\Engine\Animation\FRootMotionExtractionStep) > & RootMotionExtractionSteps, const float StartPosition, const float EndPosition ) const